solve for x. x-2.9=5.13?

x - 2.9 = 5.13
x = 5.13 + 2.9
x = 8.03

x-2.9=5.13
x=5.13+2.9
x=8.03 Answer

x = 5.13 + 2.9
x = 8.03

To solve for x:

X is your unknown varible.
Since X - 2.9 = 5.13, all you have to do is just to work backwards:

As you know, when you shift a varible across the "=" sign, the sign changes, for example if I have 1+1 = 2, if I shift the 1 across, then 1 = 2-1, which is also true. Thus, for this equation, you just have to shift the varible of "-2.9" across:

So, X - 2.9 = 5.13 becomes X = 5.13 + 2.9. Then, add a 0 to the 2.9 to make your calculations easier, thus making it X = 5.13 + 2.90. Then, use your subtraction: 5.13 + 2.90 = 8.03. Thus, your Answer is 8.03.

Simply, write your workings in this method.

X -2.9 = 5.13
X = 5.13 + 2.9
= 8.03

X is 8.03.

Hope you can do well!

I have to change 2.9 to 2.90 so that the decimals are even.

x - 2.9 = 5.13

x - 2.90 = 5.13

Now I need to add 2.90 to both sides....

x - 2.90 + 2.90 = 5.13 + 2.90

x - 0 = 5.13 + 2. 90

Now, taking out the 0 in the left side of the equation, I get...

x = 5.13 + 2.90

Now, the final part of solving is just simply adding the like terms in the decimals, and hence we get what x equals...

x = 8.03

You can also express x this way in a mixed number...

x = 8 3/100

Should you really be asked such an elementary question? Should people be answering it?

so bring the -2.9 over to the other side and add it on to the 5.13

so you get x=8.03

hope that helps